Hard t Biting, Fast
These high-perfor-mancc, German-made screws require less driving torque, yet have higher holding power than ordinary screws. The secret is in a synthetic coating that lubricates the screw and a series of tiny serrations on the threads near the tip. The scrcw head has a Pozidrive (improved Phillips) recess for a better grip, and the shank is tough enough to penetrate many materials without predrilling or breaking. These screws are suitable for use in hard and soft wood, chipboard, plywood and MDF. (Price: $ 15 for box of 500, »8 by 2-in. screws) Hcifele America Co., Dept. A\HT, Box 4000, A rcbclale, NC 27263, (919) 889-2322. CIRCLE «612
Polyurethane Glue ►
Excel is a new polyurethane wood glue imported from Europe that's highly resistant to water, chemicals and temperature extremes. It's similar in strength to plastic resin and cpoxy glue, but it doesn't & require mixing. Excel has a 30-minute open time to let you glue up complex assemblies, and a 12-hour clamping time. It bonds well to oily or exotic wood spccics, and since the glue expands as it cures, it will fill gaps in poorly fitting joints. Our tests show that once dry. Excel sands easily and takes stain better than yellow glue.
Am be I Corp., Dept AWT, J 25 Cottonport Are., Cottonport, ¡.A 71327, (318) 876-2495. uruc*»
Noise Pollution Ends Here... Guaranteed!
• Lowest Decibel Rating to guarantee little or no noise
• MlCR()-5m Carbide extra hard micrograin tip
• High Tech Laser Design
• Unique Boomerang Slot and Plug Configuration does not allow vibration to travel through the surface of the blade thereby eliminating sound
Was this article helpful?
THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.